Table 5.

Effect of sampling running blood culture on contamination rate.a

Blood cultureSampledUnsampled
Positive @ 5 days510
Negative @ 5 days354349
  • a The effect of taking samples from simulated running blood cultures. Final blood culture results (after 5-day incubation) from negative blood cultures after a sample was removed at 16 h (“sampled”), compared to replicate sets that were left “unsampled” after initial placement in the blood culture system. Differences were not found to be significant (Fisher's exact test, P = 0.297, n = 359).